Apparatus for making cement pipes.



No. 658,067. Patented Sept. l8, I900. c. J. KIELBERG.

APPARATUS FOR MAKING CEMENT PIPES.

(Application filed Oct. 2, 1899.)

(No Modal.) 2 Sheets5heef I.

m: NORRIS PETERS c0. vnmo-umo. WASHINCYON. n

Patented Sept. l8, I900.

C. J. KIELBERG.

APPARATUS FOR :4

AKING CEMENT PIPES. (Application filed. Oct. 2, 1899.)

2 Sheds-Sheet 2,

(No Model.)

UNITED STATES PATENT OFFICE.

CARL JOHAN KIELBERG, OF COPENHAGEN, DENMARK.

APPARATUS FOR MAKING CEMENT PIPES.

SPECIFICATION forming part of Letters Patent No. 658,067, datedSeptember 18, 1900.

Application filed October 2, 1899. S rial N 732,273. (No model.)

T at whom it may concern.-

Be i t known that I, CARL J OHAN KIELBERG,

polyiechnical examiner, a citizen of the Kingdom of Denmark, residing atVestei-Voldgade 14, Copenhagen,Den mark, haveinvented certain new anduseful Improvements in Apparatus for Making Cement Pipes; andl do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappert-ains to make and use the same, reference being had to theaccompanying drawings, and to letters of reference marked thereon, whichform a part of this specification.

This invention relates to an improved apparatus for making cement pipeseither with or without a collar thereon, the object being to provideimproved mechanism for producing pipes made of cement, whereby themateri-al of which said pipes are made is so manipulated that a moresolid and a stronger pipe is produced than those heretofore made in theordinary way; and the invention consists in the peculiar constructionand arrangement of the pipe-forming machinery whereby theabove-mentioned object is attained.

In the drawings forming part of this specification, Figure l is a frontelevation, and Fig. 2 is a top plan view, of a pipe-making machineconstructed according to my invention. Fig. 3 is a vertical sectionthrough the mold of the machine.

Referring to the drawings,the mold in which the pipe is formed consistsof two half-sections a, preferably of iron, held in united relations, asshown, by the iron bands 0. The collar forming part of the mold (shownat the lower end thereof) is of cast-iron and is socured to the mold bymeans of an angle-iron, as shown, and bolts passing through saidangle-iron and the meeting ends of said mold and collar and rivetedthereto.

1) represents the drum which constitutes the core of the pipe which isto be formed, operating, as below described, in said mold. This drumconsists of a metallic cylinder closed at both ends by wooden or otherheads. Near the upper end of the drum a rib or projecting strip d,preferably of angle-iron, is secured to the surface thereof in aposition inclined to the axis thereof or spirally, and said rib extendssubstantially once around the drum.

The lower end of said rib or strip d for a short distance from itsextremity extends in a line at a right angle to the axis of said drum orhorizontally.

The moldis supportedon a pallet e, preferably of wood, having a flatbottom which rests upon a cast-iron base f, which is secured to asuitable foundation by bolts, as shown, said foundation being located,preferably, in the ground and having a cylindrical chamber to receivethe said drum I). Said pellet e, as well as the iron base f, has anopening therethrough corresponding to the diameter of the drum, and thepallet is provided with the upstanding circular border g. The said drumv is lowered through the pallet into said cylindrical chamber or cavity,as shown in Fig. 3,

and when so lowered to its downinost position the lowerend of theaforesaid rib or projecting strip (1 will be brought near to said palletpart 9 or against the same. After placing the mold in position upon saidpallet c it is there locked in place by means of a clamp-block 't',which has an opening in one side to receive the extremities of thering-shaped spanner h, (see Fig. 2,) which surrounds and is secured to'the base of the mold, said clamp-block sliding between and held inplace by the lugs It. The piston-like shaft shown within and projectingabove said mold and secured to the drum 1) is adapted to be connectedwith any suitable motor mechanism whereby the mold is rotated when thepipes are being formed by the machine, such connection also permittingsaid shaft to slide vertically therein when so rotating, acommon andconvenient means,-

for such shaft connection beinga gear orpulley running horizontally,through the hub of which said shaft may extend, and having a splineconnection therewith. I

The above-described apparatus is operated as follows in making cementpipes: The mold is placed in a position where it rests upon the pallet eand is there secured, as described, the drum I) being pressed fully downuntil brought substantially to the position'shown in Fig, 3, with thelower end of said rib d in the position relative to the upstandingcircular border g of the pallet shown in said lastnamed figure.

a pipe is to be made is now placed in the mold from above upon andaround the top of said The cement mortar of which.

drum, falling between the latter and the inner walls of themold-sections a. Power is then applied to said shaft, the drum beingrotated causing it by the engagement of its said rib (Z with the mortarto compress and solidify the latter between the drum and the mold, theweight of the drum forcing the mortar strongly downward, first fillingthe collar-pallet and then solidly building the body of the pipe betweenthe core and the mold upward to complete its length, and, finally, saidrib extremity, which extends at a right angle to the axis of said drum,moves around against the end of the pipebody opposite its collar bearingend and smoothes and finishes the same. The drum 1), constituting thecore of the pipe, is then drawn up by any suitable means applied to itsshaft away from the mold and the spanner h is opened, and the mold, withthe green cement pipe therein, is carried away upon the pallet e to thedrying-yard. To aid in so moving the pallet and mold, the base f isprovided with several hand holes or openings l. After a certain time themold is removed and the pipe therein is left in the drying-yard to dryon the pallet. The mold is then again placed upon another pallet, whichreplaces the first one on said base f, and another pipe is made asbefore. If preferred, two spiral ribs (1 may be carried on said druminstead of one, or the one rib shown may be made in two sections andfixed on opposite sides of the drum, each ending below in a horizontallap. This last-described arrangement of the said ribs is preferable whenforming large pipes, for thereby the mortar will be more firmly forcedout into the collar, for the reason that both of the spiral ribs act atonce upon the mortar at the bottom of the mold andin two places or onopposite sides thereof.

If it be desired to produce pipes without collars, the collar-formingpart of the mold may be removed. In casting large pipes it is preferablethat the drum be slightly tapering or of slightly-larger diameter at theupper end, thereby reducing the friction against the bottom platesthereof when it is removed from the pipe.

The production of pipes by the use of the within-described improveddevices is much more rapid than by means heretofore employed. The pipesso produced are smoother and the material or mortar is rendered morehomogeneous and solid, and consequently stronger pipes are made.

Having thus described my invention, what I claim, and desire to secureby Letters Pat ent ofthe United States, is-- A device for forming pipesfrom cement mortar comprising a pipe-core b, a laterallyprojecting ribd, extending on the surface of said core in part, spirally, and in partat right angles to the axis thereof, a shaft fixed to the upper end ofsaid core in line with the axis thereof for connection with suitablemechanism whereby said core may be rotated and guided in a movement inline with the axis thereof, combined with the fixed mold a above saidcore, through which said shaft extends upwardly, in which the core maymove in said axial line, a support for said mold, and a core receivingchamber below said mold, substantially as described.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

CARL JOHAN KIELBERG.

Witnesses:

H. FLEISGHER, O. F. O. O. BRACKER.

